前言
UIView 不像 UIButton 加了點擊事件就會有點擊效果，體驗要差不少，這里分別通過自定義和擴展來實現類似 UIButton 的效果。
正文
一、為 UIView 添加點擊事件
extension UIView { func addOnClickListener(target: AnyObject, action: Selector) { let gr = UITapGestureRecognizer(target: target, action: action) gr.numberOfTapsRequired = 1 userInteractionEnabled = true addGestureRecognizer(gr) }}二、為 UIView 添加點擊效果
class UIViewEffect : UIView { override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { backgroundColor = UIColor.groupTableViewBackgroundColor() } override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) { UIView.animateWithDuration(0.15, animations: { () -> Void in self.backgroundColor = UIColor.clearColor() }) } override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) { UIView.animateWithDuration(0.15, animations: { () -> Void in self.backgroundColor = UIColor.clearColor() }) }}這里大家可以換成自己的點擊效果，如果是 UIImageView 可以換成點擊變更透明度。
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疑難解答
